CN115265675B - Spontaneous current amount detection system - Google Patents
Spontaneous current amount detection system Download PDFInfo
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- CN115265675B CN115265675B CN202211066470.9A CN202211066470A CN115265675B CN 115265675 B CN115265675 B CN 115265675B CN 202211066470 A CN202211066470 A CN 202211066470A CN 115265675 B CN115265675 B CN 115265675B
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- 238000001514 detection method Methods 0.000 title claims abstract description 75
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 23
- 238000010248 power generation Methods 0.000 claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 89
- 238000005070 sampling Methods 0.000 claims description 36
- 239000003990 capacitor Substances 0.000 claims description 33
- 238000004804 winding Methods 0.000 claims description 16
- 230000003044 adaptive effect Effects 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/22—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
- G01F1/24—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters with magnetic or electric coupling to the indicating device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a flow detection system, in particular to a spontaneous current amount detection system which comprises a power generation module and a detection module, wherein the power generation module is connected with the detection module in an adapting way, fluid is conveyed into the detection module through alternating current generated by the power generation module, the detection module works by using the alternating current generated by the power generation module as energy, and the alternating current is sampled to obtain the flow of the fluid. The spontaneous current amount detection system is provided with the power generation module to convert kinetic energy of fluid into electric energy, and provides working current for the detection module, and an external battery is not needed, so that the use cost is low.
Description
Technical Field
The invention belongs to the technical field of flow detection systems, and particularly relates to a spontaneous current amount detection system.
Background
The flow detection system is usually used in the scenes of plant watering, water heater quantitative heating, gas meter metering, cleaning water gun, shower head and the like, and can display flow information used by a user.
At present, a flow detection system generally comprises a detection module and a power supply module, wherein the power supply module uses a battery as a power supply to supply power to the detection module, and the battery is a consumable product and needs to be replaced after long-term use, so that the use cost is increased.
Disclosure of Invention
The invention aims to provide a spontaneous current amount detection system which is low in use cost.
In order to solve the problems, the following technical scheme is provided:
the spontaneous current amount detection system of the invention is characterized by comprising a power generation module and a detection module. The power generation module is connected with the detection module in an adapting way, and fluid generates alternating current through the power generation module and is transmitted to the detection module. The detection module works by using the alternating current generated by the power generation module as energy, and samples the alternating current to obtain the flow of the fluid.
The power generation module comprises a shell made of magnetic field penetrable materials, the inner cavity of the shell is cylindrical, a rotor for generating a magnetic field is concentrically arranged in the shell, blades are uniformly distributed on the outer peripheral surface of the rotor along the circumferential direction of the rotor, stator windings are wound on the side wall of the shell corresponding to the rotor, when the rotor rotates, the magnetic flux in the stator windings is changed, alternating induced electromotive force is generated in the stator windings, and then alternating current is formed. The shell wall is provided with a water inlet hole and a water outlet hole which are communicated with the inner cavity of the shell, the directions of the water inlet hole and the water outlet hole are opposite, the inner diameters of the water inlet hole and the water outlet hole are equal, and the water inlet hole and the water outlet hole are arranged along the tangential direction of the inner cavity of the shell.
Blind holes are formed in the side walls of the shell corresponding to the two ends of the rotor, the two ends of the rotor are respectively positioned in the blind holes, and bearings are arranged between the two ends of the rotating shaft and the corresponding blind holes.
The outer side of the shell is rectangular, the corresponding side wall of the shell of the rotor is provided with an annular groove, and the stator winding is wound in the annular groove. The outer ends of the water inlet and the water outlet are respectively positioned on a group of parallel outer side walls of the shell. The axes of the water inlet hole and the water outlet hole are parallel and are arranged in a staggered way.
The shell side wall corresponding to the water inlet hole is provided with an outward extending pipe body, the axis of the pipe body is coincident with that of the water inlet hole, and the inner cavities of the pipe body and the water inlet hole are identical. The shell side wall corresponding to the water outlet is provided with an outwards extending pipe body, the axis of the pipe body is coincident with that of the water outlet, and the inner cavities of the pipe body and the water outlet are identical. The outer ends of the pipe inlet body and the pipe outlet body are respectively provided with a plug.
The detection module comprises a rectification module, a control module and a sampling circuit. The rectification module is connected with the power generation module and the control module in an adapting way, and the sampling circuit is connected with the rectification module and the control module in an adapting way. The rectification module converts alternating current generated by the power generation module into direct current and outputs the direct current as a power supply VCC to the control module, the sampling circuit samples the alternating current generated by the power generation module and outputs a sampling signal PL to the control module, the control module calculates the sampling signal corresponding to the sampling circuit, the current flow can be obtained, and the current flow is accumulated to obtain the total flow of one-time use.
The rectifying module comprises a rectifying chip U3 and a boosting chip U2, and the control module comprises a control chip U1. And the pins 2 and 4 of the rectifying chip U3 are connected with the power generation module in an adaptive manner and are used for receiving alternating current generated by the power generation module. The 3 feet of the rectifying chip U3 are grounded, the 1 foot of the rectifying chip U3 is connected with the 2 feet of the boosting chip U2, the VIN of the boosting chip U2 is used as the VIN of the boosting chip U2, the 3 feet of the boosting chip U2 are the power VCC, and the 3 feet are connected with the power pins of the control chip U1.
The sampling circuit comprises a diode D3, and the positive electrode of the diode D3 is connected with the power generation module in an adaptive manner and is used for sampling alternating current generated by the power generation module. The negative pole of diode D3 links to each other with the one end of resistance R14, and the other end of resistance R14 links to each other with the negative pole of diode D4, and the positive pole ground of diode D4, the one end of resistance R14 that links to each other with diode D4 promptly output sampling signal PL, and it links to each other with an I/O port of control chip U1.
A capacitor C17 is connected in series between the 1 pin and the 3 pin of the rectifying chip U3. The 1 foot of rectifier chip U3 links to each other with the one end of electric capacity C4 and resistance R9 respectively, and electric capacity C4's the other end ground connection, and resistance R9's the other end links to each other with diode D1's negative pole, diode D1's positive pole ground connection. The 1 pin of the rectifying chip U3 is grounded through a capacitor C13.
The detection module further comprises a temperature detection circuit comprising a temperature probe, a resistor R10 and a resistor R11. The 2 feet of the temperature probe are grounded, the 1 foot of the temperature probe is respectively connected with one end of a resistor R10 and one end of a resistor R11, the other end of the resistor R10 is respectively connected with one end of a capacitor C1, one end of a capacitor C2 and a power supply VCC, the other end of the resistor R11 is respectively connected with one end of a capacitor C3 and one I/O port of a control chip U1, and the other ends of the capacitor C1, the capacitor C2 and the capacitor C3 are grounded.
By adopting the scheme, the method has the following advantages:
the spontaneous current amount detection system comprises a power generation module and a detection module, wherein the power generation module is connected with the detection module in an adaptive manner, fluid is conveyed into the detection module through alternating current generated by the power generation module, the detection module works by using the alternating current generated by the power generation module as energy, and the alternating current is sampled to obtain the flow of the fluid. The spontaneous current amount detection system is provided with the power generation module to convert kinetic energy of fluid into electric energy, and provides working current for the detection module, so that a battery is replaced to supply power for the detection system, the battery is not required to be replaced after the spontaneous current amount detection system is used for a long time, and the use cost is reduced.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of a power generation module according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of a power generation module of the present invention with half of the housing and stator windings hidden;
FIG. 5 is a schematic diagram of a rectifier module and sampling circuit of the present invention;
FIG. 6 is a schematic diagram of a control module of the present invention;
fig. 7 is a schematic diagram of a temperature detection circuit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The spontaneous current amount detection system of the present invention includes a power generation module and a detection module. The power generation module is connected with the detection module in an adapting way, and fluid generates alternating current through the power generation module and is transmitted to the detection module. The detection module works by using the alternating current generated by the power generation module as energy, and samples the alternating current to obtain the flow of the fluid. The spontaneous current amount detection system is provided with the power generation module, the kinetic energy of fluid is converted into electric energy through the power generation module, working current is provided for the detection module, a battery is replaced to serve as a power supply to supply power for the detection system, the battery is not required to be replaced after long-term use, and the use cost is reduced.
The power generation module comprises a shell 1 made of magnetic field penetrable materials, the inner cavity of the shell 1 is cylindrical, a rotor for generating a magnetic field is concentrically arranged in the shell 1, blades 8 are uniformly distributed on the outer peripheral surface of the rotor along the circumferential direction of the rotor, stator windings 15 are wound on the side wall of the segment of the shell 1 corresponding to the rotor, when the rotor rotates, the change of magnetic flux in the stator windings 15 is caused, alternating induced electromotive force is generated in the stator windings 15, and then alternating current is formed. The wall of the shell 1 is provided with a water inlet hole 9 and a water outlet hole 4 which are communicated with the inner cavity of the shell, the directions of the water inlet hole 9 and the water outlet hole 4 are opposite, the inner diameters of the water inlet hole 9 and the water outlet hole 4 are equal, and the water inlet hole 9 and the water outlet hole 4 are arranged along the tangential direction of the inner cavity of the shell 1. When the fluid passes through the inner cavity of the shell 1, the blades 8 of the rotor are pushed to rotate so as to drive the rotor to rotate, the stator winding 15 cuts the magnetic induction line of the rotor to generate induced electromotive force, and then alternating current is formed. The housing 1 is made of a material that does not affect the magnetic field, such as plastic like ABS or POM, and the housing 1 in this embodiment is made of POM for ensuring strength. The rotor comprises a rotor shell 11, a rotor end cover 12, a rotating shaft 7 and a magnetic core 3 for generating a magnetic field, wherein the rotor end cover 12 limits the magnetic core 3 in an inner cavity of the rotor shell 11, and the rotating shaft 7 penetrates through the magnetic core 3, the rotor shell 11 and the central part of the rotor end cover 12.
Blind holes 13 are formed in the side wall of the shell 1 corresponding to the two ends of the rotor, the two ends of the rotor are respectively located in the blind holes 13, and bearings 14 are arranged between the two ends of the rotating shaft 7 and the corresponding blind holes 13. By providing the shaft 7, friction with the housing 1 during rotation of the rotor is reduced.
The outer side of the shell 1 is rectangular, the side wall of the shell 1 corresponding to the rotor is provided with an annular groove 2, the stator winding 15 is wound in the annular groove 2, and the outer ends of the water inlet hole 9 and the water outlet hole 4 are respectively positioned on a group of parallel outer side walls of the shell 1. The axes of the water inlet hole 9 and the water outlet hole 4 are parallel and are arranged in a staggered way.
The water inlet hole 9 is provided with a water inlet pipe body 10 which extends outwards on the side wall of the shell 1 corresponding to the water inlet hole 9, the water inlet pipe body 10 is overlapped with the axis of the water inlet hole 9, the inner cavities of the water inlet pipe body 10 and the water inlet hole are the same, the water outlet hole 4 is provided with a water outlet pipe body 6 which extends outwards on the side wall of the shell 1 corresponding to the water outlet hole 4, the water outlet pipe body 6 is overlapped with the axis of the water outlet hole 4, and the inner cavities of the water outlet pipe body and the water outlet hole are the same. The outer ends of the pipe inlet body 10 and the pipe outlet body 6 are respectively provided with a plug 5, and when the detection system is installed, the pipe inlet body 10 and the pipe outlet body 6 are directly connected with one ends corresponding to the fluid transportation pipes, so that the detection system power generation module is convenient to install.
The detection module comprises a rectification module, a control module and a sampling circuit, wherein the rectification module is in adaptive connection with the power generation module and the control module, the sampling circuit is in adaptive connection with the rectification module and the control module, the rectification module converts alternating current generated by the power generation module into direct current and outputs the direct current as a power source VCC to the control module, the sampling circuit samples alternating current generated by the power generation module and outputs a sampling signal PL to the control module, the control module calculates the sampling signal corresponding to the sampling circuit, so that the current flow is obtained, and the current flow is accumulated, so that the total flow for one use is obtained. The control module calculates the current flow Q according to the sampling signal, and the specific formula is as follows:
Q＝C×N；
wherein C is the fluid dynamic factor as a constant, and is directly estimated through experiments according to the type of fluid (such as water, oil, gas and the like), N is the rotating speed, namely the frequency f, and the unit is r/min. Before calculating the flow Q, the hydrodynamic factor C is estimated, specifically, the given flow Q and the rotation speed N are measured, and then the hydrodynamic factor C is calculated, where the specific calculation formula is:
Q＝ΔV/Δt；
C＝Q/N＝ΔV/(60fΔt/60)＝ΔV/(fΔt)；
where DeltaV is the volume, deltaL is the time and Deltat is the s. f is frequency in Hz. After the hydrodynamic factor C is obtained by the above formula, the flow Q is calculated by combining the above calculation formula according to the frequency f of the sampling signal.
The rectifying module comprises a rectifying chip U3 and a voltage stabilizing chip U2, and the control module comprises a control chip U1. And the pins 2 and 4 of the rectifying chip U3 are connected with the power generation module in an adaptive manner and are used for receiving alternating current generated by the power generation module. The 3 feet of the rectifying chip U3 are grounded, the 1 foot of the rectifying chip U3 is connected with the 2 feet of the voltage stabilizing chip U2, the VIN of the voltage stabilizing chip U2 is used as the VIN of the voltage stabilizing chip U2, the 3 feet of the voltage stabilizing chip U2 are the power VCC, and the 3 feet are connected with the power pins of the control chip U1. The model of the rectifying chip U3 is preferably MB24S, and the model of the voltage stabilizing chip U2 is preferably HT7533. The model of the control chip U1 is preferably Ruisa/R7 FA2L1A92DFL. The sampling circuit outputs a sampling signal PL to a 36 pin of a control chip U1 of the control module, and the rectifying module outputs a power VCC to one of a9 pin, a 45 pin, a 42 pin, a 30 pin, and a 15 pin of the control chip U1 of the control module. The port P1 and the port P2 are ports for connecting the singlechip with a nixie tube display screen of an external display module, and the port P3 is a downloading port for downloading programs to the singlechip.
The sampling circuit comprises a diode D3, and the anode of the diode D3 is connected with the power generation module in an adaptive manner and is used for sampling alternating current generated by the power generation module. The negative pole of diode D3 links to each other with the one end of resistance R14, and the other end of resistance R14 links to each other with the negative pole of diode D4, and the positive pole ground of diode D4, the one end of resistance R14 that links to each other with diode D4 promptly output sampling signal PL, and it links to each other with an I/O port of control chip U1. The model of the Diode D3 is preferably a Diode 1N4148, the resistance value of R14 is 10kΩ, and the sampling signal PL is output to the 36 pins of the control chip U1 of the control module. Wherein the diode D3, the resistor R14 and the diode D4 are used for measuring the alternating current frequency.
And a capacitor C17 is connected in series between the 1 pin and the 3 pin of the rectifying chip U3. The 1 foot of rectifier chip U3 links to each other with the one end of electric capacity C4 and resistance R9 respectively, and electric capacity C4's the other end ground connection, and resistance R9's the other end links to each other with diode D1's negative pole, diode D1's positive pole ground connection. The 1 pin of the rectifying chip U3 is grounded through a capacitor C13. The capacitance of the capacitor C17 is 100uF. The capacitance C4 is 100uF. The resistance value of the resistor R9 is 100deg.OMEGA. The rectification chip U3 is an alternating current bridge and rectifies alternating current into direct current. The voltage stabilizing chip U2 stabilizes the rectified voltage so as to be directly used as the working current of the control module. The resistor R9, the capacitor C4 and the diode D1 are used to protect the circuit from damage when the fault power VCC is too large.
The detection module further comprises a temperature detection circuit, wherein the temperature detection circuit comprises a temperature probe, a resistor R10 and a resistor R11. The 2 feet of the temperature probe are grounded, the 1 foot of the temperature probe is respectively connected with one end of a resistor R10 and one end of a resistor R11, the other end of the resistor R10 is respectively connected with one end of a capacitor C1, one end of a capacitor C2 and a power supply VCC, the other end of the resistor R11 is respectively connected with one end of a capacitor C3 and one I/O port of a control chip U1, and the other ends of the capacitor C1, the capacitor C2 and the capacitor C3 are grounded. The resistance value of the resistor R10 is 10kΩ. The resistance value of the resistor R11 is 1kΩ. The capacity of the capacitor C1 is 100uF. One end of the resistor R11 is respectively connected with one end of the capacitor C3 and the 48 pins of the control chip U1. The temperature detection circuit can detect the temperature of the fluid, the water temperature can be displayed through the external display module of the control module, and the use experience of a user is improved. The resistor R10 and the resistor R11 function as voltage division, so that the working voltage supplied to the temperature probe is stable. The capacitor C1, the capacitor C2 and the capacitor C3 play a role of filtering, so that the temperature detection signal NTC output to the control module is stable.
The working principle and the using flow of the invention are as follows:
when the detection system is installed, after the fluid transportation pipeline is cut off, one end of the fluid transportation pipeline is inserted into the pipe inlet body 10 of the power generation module of the detection system, and the other end of the fluid transportation pipeline is inserted into the pipe outlet body 6 of the power generation module. Fluid enters the water inlet hole 9 of the power generation module of the spontaneous current amount detection system from the water inlet pipe body 10, rotates in the inner cavity of the shell 1 through the blades 8 pushing the rotor, and then flows into the pipe body 6 through the water outlet hole 4 and is used by a user. When the fluid passes through the inner cavity of the shell 1, the blades 8 of the rotor are pushed to rotate so as to drive the rotor to rotate, the stator winding 15 cuts the magnetic induction lines generated by the rotor to generate induced electromotive force, then alternating current is formed, and the alternating current is transmitted to the port H2 of the rectifying circuit from the stator winding 15. After rectifying and stabilizing the current, the rectifying chip U3 and the stabilizing chip U2 output the current as VCC to one of the 9, 45, 42, 30 and 15 pins of the control chip U1. The sampling circuit samples the input current at the same time and outputs a sampling signal PL to pin 36 of the control chip U1. After the control chip U1 calculates the input sampling signal PL, the real-time flow value, the pressure value/total flow value can be displayed through the external display module, so that a user can know water information conveniently. The water pressure is calculated according to the following formula:
P＝[Q/(A×K)] 2 /2
wherein A is the water flow area, which is the determined design value, and the unit is mm 2 K is a constant, determined experimentally, Q is the flow, and is measured as described above. In addition, this spontaneous current can set up temperature detection circuit to detecting system, and temperature detection circuit can detect the temperature of fluid, then carries temperature detection signal NTC to control module, and control module can show the temperature through external display module, increases user's use experience.
The self-current quantity detection system can be applied to a watering spray head scene of a passive flowmeter, the detection system is installed in the watering spray head, when flowers are watered in a household manner, the water demand of different plants in different days is different, and the spray head can be used for knowing the water flow, the temperature and the water consumption, so that quantitative watering is convenient. The spontaneous current amount detection system can be applied to a quantitative heating scene of the water heater, can quantitatively add water to the water heater, and quantitatively adds water to reheat by means of the passive flowmeter according to daily water demand when the household water heater is used, so that how much water heater needs to be used for heating is realized, waste caused by no consumption of hot water is avoided, and the heating water is saved. The spontaneous current amount detection system can be applied to a passive gas meter scene, and the current gas meter is used for a long time and then needs to replace a battery due to the fact that the battery is exhausted, so that the use cost is increased. By using the passive flowmeter, the gas flow can be utilized to generate electricity, the flowmeter is powered for counting the gas usage amount, a user does not need to replace a battery any more, the use cost is reduced, and the user experience is improved. The spontaneous current amount detection system can be applied to passive flow display cleaning water gun scenes, is installed in a cleaning water gun handle, and can be used for detecting and displaying water flow, water consumption and other information by utilizing hydroelectric power generation, so that the automatic current amount detection system is convenient to use. This spontaneous current amount detecting system can use at the shower scene of rimless flowmeter, installs this monitoring system and utilizes hydroelectric power generation to detect and show water information on the shower pipe, and convenience of customers looks over shower water outlet temperature, increases user's use experience.
Claims (5)
1. The spontaneous current amount detection system is characterized by comprising a power generation module and a detection module, wherein the power generation module is connected with the detection module in an adaptive manner; the fluid generates alternating current through the power generation module and is transmitted to the detection module; the detection module works by using the alternating current generated by the power generation module as energy, and samples the alternating current to obtain the flow of the fluid; the power generation module comprises a shell made of magnetic field penetrable materials, wherein the inner cavity of the shell is cylindrical, a rotor for generating a magnetic field is concentrically arranged in the shell, blades are uniformly distributed on the peripheral surface of the rotor along the circumferential direction of the rotor, a stator winding is wound on the side wall of the shell corresponding to the rotor, when the rotor rotates, the change of magnetic flux in the stator winding is caused, alternating induced electromotive force is generated in the stator winding, and then alternating current is formed; the wall of the shell is provided with a water inlet hole and a water outlet hole which are communicated with the inner cavity of the shell, the directions of the water inlet hole and the water outlet hole are opposite, the inner diameters of the water inlet hole and the water outlet hole are equal, and the water inlet hole and the water outlet hole are arranged along the tangential direction of the inner cavity of the shell; blind holes are formed in the side walls of the shell corresponding to the two ends of the rotor, the two ends of the rotor are respectively positioned in the blind holes, and bearings are arranged between the two ends of the rotating shaft and the corresponding blind holes; the detection module comprises a rectification module, a control module and a sampling circuit; the sampling circuit is connected with the rectifying module and the control module in an adapting way; the rectification module converts alternating current generated by the power generation module into direct current and outputs the direct current as a power supply VCC to the control module, the sampling circuit samples the alternating current generated by the power generation module and outputs a sampling signal PL to the control module, the control module calculates the sampling signal corresponding to the sampling circuit to obtain the current flow, and the current flow is accumulated with the current flow to obtain the total flow for one-time use; the rectifying module comprises a rectifying chip U3 and a boosting chip U2, and the control module is provided with a control chip U1; the pin 2 and the pin 4 of the rectifying chip U3 are connected with the power generation module in an adaptive manner and are used for receiving alternating current generated by the power generation module; the 3 pin of the rectifying chip U3 is grounded, the 1 pin of the rectifying chip U3 is connected with the 2 pin of the boosting chip U2, and is used as VIN of the boosting chip U2, the 3 pin of the boosting chip U2 is the power VCC and is connected with the power pin of the control chip U1; the sampling circuit comprises a diode D3, and the positive electrode of the diode D3 is connected with the power generation module in an adaptive manner and is used for sampling alternating current generated by the power generation module; the negative electrode of the diode D3 is connected with one end of a resistor R14, the other end of the resistor R14 is connected with the negative electrode of the diode D4, the resistance value of the resistor R14 is 10KΩ, the positive electrode of the diode D4 is grounded, one end of the resistor R14 connected with the diode D4 outputs the sampling signal PL, and the resistor R14 is connected with one I/O port of the control chip U1.
2. The spontaneous current amount detection system as claimed in claim 1, wherein the outer side of the housing is rectangular, the rotor has an annular groove on the corresponding side wall of the housing, and the stator winding is wound in the annular groove; the outer ends of the water inlet holes and the water outlet holes are respectively positioned on a group of parallel outer side walls of the shell, and the axes of the water inlet holes and the water outlet holes are parallel and are arranged in a staggered way.
3. The spontaneous current amount detection system according to claim 2, wherein the side wall of the casing corresponding to the water inlet hole is provided with a pipe body extending outwards, the axes of the pipe body and the water inlet hole are coincident, and the inner cavities of the pipe body and the water inlet hole are identical; the shell side wall corresponding to the water outlet hole is provided with an outwards extending pipe body, the axis of the pipe body is coincident with that of the water outlet hole, and the inner cavities of the pipe body and the water outlet hole are identical; and plugs are arranged at the outer ends of the inlet pipe body and the outlet pipe body.
4. The spontaneous current amount detection system as claimed in claim 1, wherein a capacitor C17 is connected in series between the 1 pin and the 3 pin of the rectifying chip U3; the 1 pin of the rectifying chip U3 is respectively connected with one end of a capacitor C4 and one end of a resistor R9, the other end of the capacitor C4 is grounded, the other end of the resistor R9 is connected with the negative electrode of a diode D1, and the positive electrode of the diode D1 is grounded; and a pin 1 of the rectifying chip U3 is grounded through a capacitor C13.
5. The spontaneous current amount detection system as claimed in claim 4, wherein said detection module further comprises a temperature detection circuit comprising a temperature probe, a resistor R10 and a resistor R11; the 2 feet of the temperature probe are grounded, the 1 foot of the temperature probe is respectively connected with one end of a resistor R10 and one end of a resistor R11, the other end of the resistor R10 is respectively connected with one end of a capacitor C1, one end of a capacitor C2 and the power VCC, the other end of the resistor R11 is respectively connected with one end of a capacitor C3 and one I/O port of the control chip U1, and the other ends of the capacitor C1, the capacitor C2 and the capacitor C3 are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211066470.9A CN115265675B (en) | 2022-09-01 | 2022-09-01 | Spontaneous current amount detection system |
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